Pickling, fluxing and pre-heating
Quality, resistance, endurance performances of a galvanized product depend on the phases that precede the immersion in the zinc bath. Pickling consists in taking away from the steel its typical impurities, such as rust and calamine residuals, by putting items in solution of hydrochloric acid and water. The next phase is fluxing, a chemical bath that ensures the creation of a protective label that improves galvanization quality. And the process of preparation ends with a pre-heating that enhances the reaction iron-zinc and diminishes the thermic shock that items suffer at the very moment of the immersion in zinc bath.